[cig-commits] r17255 - in seismo/3D/SPECFEM3D_GLOBE/trunk/USER_MANUAL: . figures

[dkomati1 at geodynamics.org]

Author: dkomati1
Date: 2010-10-10 16:20:29 -0700 (Sun, 10 Oct 2010)
New Revision: 17255

Modified:
   seismo/3D/SPECFEM3D_GLOBE/trunk/USER_MANUAL/figures/PKPdf_all_15s500s.pdf
   seismo/3D/SPECFEM3D_GLOBE/trunk/USER_MANUAL/figures/bolivia_trans.pdf
   seismo/3D/SPECFEM3D_GLOBE/trunk/USER_MANUAL/figures/bolivia_vertical.pdf
   seismo/3D/SPECFEM3D_GLOBE/trunk/USER_MANUAL/figures/vanuatu_trans.pdf
   seismo/3D/SPECFEM3D_GLOBE/trunk/USER_MANUAL/figures/vanuatu_vertical.pdf
   seismo/3D/SPECFEM3D_GLOBE/trunk/USER_MANUAL/manual_SPECFEM3D_GLOBE.pdf
   seismo/3D/SPECFEM3D_GLOBE/trunk/USER_MANUAL/manual_SPECFEM3D_GLOBE.tex
Log:
added a sentence about geographic/geocentric conversion when comparing to normal modes


Modified: seismo/3D/SPECFEM3D_GLOBE/trunk/USER_MANUAL/figures/PKPdf_all_15s500s.pdf
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Modified: seismo/3D/SPECFEM3D_GLOBE/trunk/USER_MANUAL/figures/bolivia_trans.pdf
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Modified: seismo/3D/SPECFEM3D_GLOBE/trunk/USER_MANUAL/figures/bolivia_vertical.pdf
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Modified: seismo/3D/SPECFEM3D_GLOBE/trunk/USER_MANUAL/figures/vanuatu_trans.pdf
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Modified: seismo/3D/SPECFEM3D_GLOBE/trunk/USER_MANUAL/figures/vanuatu_vertical.pdf
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Modified: seismo/3D/SPECFEM3D_GLOBE/trunk/USER_MANUAL/manual_SPECFEM3D_GLOBE.pdf
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Modified: seismo/3D/SPECFEM3D_GLOBE/trunk/USER_MANUAL/manual_SPECFEM3D_GLOBE.tex
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--- seismo/3D/SPECFEM3D_GLOBE/trunk/USER_MANUAL/manual_SPECFEM3D_GLOBE.tex	2010-10-10 23:13:24 UTC (rev 17254)
+++ seismo/3D/SPECFEM3D_GLOBE/trunk/USER_MANUAL/manual_SPECFEM3D_GLOBE.tex	2010-10-10 23:20:29 UTC (rev 17255)
@@ -3261,6 +3261,14 @@
 contains the normal-mode and SEM seismograms, and the parameters (\texttt{STATIONS},
 \texttt{CMTSOLUTION} and \texttt{Par\_file}) for the SEM simulations.
 
+Important remark: when comparing SEM results to normal mode results, one needs to 
+convert source and receiver coordinates from geographic to geocentric coordinates,
+because on the equator the geographic and
+geocentric latitude are identical but not elsewhere. Even for
+spherically-symmetric simulations one must perform this conversion
+because the source and receiver locations provided by globalCMT.org and
+IRIS involve geographic coordinates.
+
 \chapter{\label{cha:SAC-headers}SAC Headers}
 
 Information about the simulation (i.e., event/station information, sampling rate, etc.) is written in the header of the seismograms in SAC format. The list of values and related explanation are given in Figure \ref{fig:SAC-headers}. Please check the SAC webpages \url{www.iris.edu/software/sac/} for further information. Please note that the reference time KZTIME is the centroid time ($t_\text{CMT}=t_\text{PDE}+\texttt{time shift}$) which corresponds to zero time in the synthetics. For kinematic rupture simulations, KZTIME is equal to the CMT time of the source having the minimum time-shift in the \texttt{CMTSOLUTION} file, and coordinates, depth and half-duration of the event are not provided in the headers.